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// { dg-options "-std=gnu++0x" }

// { dg-require-cstdint "" }

// Copyright (C) 2008, 2009 Free Software Foundation

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

// 20.8.4 Class template time_point [time.point]

#include <chrono>

#include <testsuite_hooks.h>

// 20.8.4.3 time_point arithmetic [time.point.arithmetic]

void

test01()

{

  bool test __attribute__((unused)) = true;

  using namespace std::chrono;

  time_point<system_clock> t1, t2;

  t1 += seconds(1);

  VERIFY(t2.time_since_epoch() + seconds(1) == t1.time_since_epoch());

  t1 -= std::chrono::seconds(1);

  VERIFY(t2.time_since_epoch() == t1.time_since_epoch());

}

// 20.8.4.5 time_point non-member arithmetic [time.point.nonmember]

void

test02()

{

  bool test __attribute__((unused)) = true;

  using namespace std::chrono;

  time_point<system_clock> t1;

  time_point<system_clock> t2(t1 + seconds(1));

  VERIFY(t2.time_since_epoch() == t1.time_since_epoch() + seconds(1));

  time_point<system_clock> t3(seconds(1) + t1);

  VERIFY(t3.time_since_epoch() == t1.time_since_epoch() + seconds(1));

  time_point<system_clock> t4(seconds(1));

  time_point<system_clock> t5(seconds(2));

  time_point<system_clock> t6(t5 - seconds(1));

  VERIFY(t6.time_since_epoch() == t4.time_since_epoch());

  time_point<system_clock> t7(t5 - t4);

  VERIFY(t7.time_since_epoch() == t4.time_since_epoch());

}

int

main()

{

  test01();

  test02();

  return 0;

}